apr-util heap buffer underwrite
Published Jun 6, 2009
4.3
MEDIUMCVSS 2.0
EPSS 8.53%
Description
The apr_strmatch_precompile function in strmatch/apr_strmatch.c in Apache APR-util before 1.3.5 allows remote attackers to cause a denial of service (daemon crash) via crafted input involving (1) a .htaccess file used with the Apache HTTP Server, (2) the SVNMasterURI directive in the mod_dav_svn module in the Apache HTTP Server, (3) the mod_apreq2 module for the Apache HTTP Server, or (4) an application that uses the libapreq2 library, which triggers a heap-based buffer underflow.
Affected products
No data.
Configuration 1
- ≤ 1.3.4
- 0.9.1
- 0.9.2
- 0.9.3
- 0.9.4
- 0.9.5
- 1.0
- 1.0.1
- 1.0.2
- 1.1.0
- 1.1.1
- 1.1.2
- 1.2.1
- 1.2.2
- 1.2.6
- 1.2.7
- 1.2.8
- 1.3.0
- 1.3.1
- 1.3.2
- 1.3.3
Configuration 2
- ≥ 2.2.0 · < 2.2.12
No data.
JBEWS 1.0 for RHEL 4
httpd22-0:2.2.10-23.1.ep5.el4
Fixed · RHSA-2009:1160
Red Hat Certificate System 7.3
ant-0:1.6.5-1jpp_1rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
avalon-logkit-0:1.2-2jpp_4rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
axis-0:1.2.1-1jpp_3rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
classpathx-jaf-0:1.0-2jpp_6rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
classpathx-mail-0:1.1.1-2jpp_8rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
geronimo-specs-0:1.0-0.M4.1jpp_10rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
jakarta-commons-modeler-0:2.0-3jpp_2rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
log4j-0:1.2.12-1jpp_1rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
mx4j-1:3.0.1-1jpp_4rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
pcsc-lite-0:1.3.3-3.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-ca-0:7.3.0-20.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-java-tools-0:7.3.0-10.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-kra-0:7.3.0-14.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-manage-0:7.3.0-19.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-native-tools-0:7.3.0-6.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-ocsp-0:7.3.0-13.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-tks-0:7.3.0-13.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
tomcat5-0:5.5.23-0jpp_4rh.16
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
xerces-j2-0:2.7.1-1jpp_1rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
xml-commons-0:1.3.02-2jpp_1rh
Fixed · RHSA-2010:0602
Red Hat Enterprise Linux 3
httpd-0:2.0.46-73.ent
Fixed · RHSA-2009:1108
Red Hat Enterprise Linux 4
apr-util-0:0.9.4-22.el4_8.1
Fixed · RHSA-2009:1107
Red Hat Enterprise Linux 5
apr-util-0:1.2.7-7.el5_3.1
Fixed · RHSA-2009:1107
| Product | Package | State | Advisory |
|---|---|---|---|
| JBEWS 1.0 for RHEL 4 | httpd22-0:2.2.10-23.1.ep5.el4 | Fixed | RHSA-2009:1160 |
| Red Hat Certificate System 7.3 | ant-0:1.6.5-1jpp_1rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | avalon-logkit-0:1.2-2jpp_4rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | axis-0:1.2.1-1jpp_3rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | classpathx-jaf-0:1.0-2jpp_6rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | classpathx-mail-0:1.1.1-2jpp_8rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | geronimo-specs-0:1.0-0.M4.1jpp_10rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | jakarta-commons-modeler-0:2.0-3jpp_2rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | log4j-0:1.2.12-1jpp_1rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | mx4j-1:3.0.1-1jpp_4rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | pcsc-lite-0:1.3.3-3.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-ca-0:7.3.0-20.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-java-tools-0:7.3.0-10.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-kra-0:7.3.0-14.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-manage-0:7.3.0-19.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-native-tools-0:7.3.0-6.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-ocsp-0:7.3.0-13.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-tks-0:7.3.0-13.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | tomcat5-0:5.5.23-0jpp_4rh.16 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | xerces-j2-0:2.7.1-1jpp_1rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | xml-commons-0:1.3.02-2jpp_1rh | Fixed | RHSA-2010:0602 |
| Red Hat Enterprise Linux 3 | httpd-0:2.0.46-73.ent | Fixed | RHSA-2009:1108 |
| Red Hat Enterprise Linux 4 | apr-util-0:0.9.4-22.el4_8.1 | Fixed | RHSA-2009:1107 |
| Red Hat Enterprise Linux 5 | apr-util-0:1.2.7-7.el5_3.1 | Fixed | RHSA-2009:1107 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.53% (0.08530) | 94.89th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.53% (0.08530) | 94.33th | v5 (v2026.06.15) |
| Jun 13, 2026 | 11.45% (0.11454) | 93.79th | v4 (v2025.03.14) |
| Dec 28, 2025 | 15.68% (0.15679) | 94.48th | v4 (v2025.03.14) |
| Dec 27, 2025 | 17.20% (0.17201) | 94.83th | v4 (v2025.03.14) |
| Oct 28, 2025 | 15.65% (0.15649) | 94.39th | v4 (v2025.03.14) |
| Oct 27, 2025 | 17.17% (0.17169) | 94.75th | v4 (v2025.03.14) |
| Oct 16, 2025 | 15.65% (0.15649) | 94.38th | v4 (v2025.03.14) |
| Oct 1, 2025 | 10.07% (0.10070) | 92.84th | v4 (v2025.03.14) |
| Jul 30, 2025 | 11.14% (0.11138) | 93.18th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.07% (0.10070) | 92.35th | v4 (v2025.03.14) |
| Mar 29, 2025 | 14.82% (0.14825) | 90.90th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.07% (0.10070) | 92.51th | v4 (v2025.03.14) |
| Dec 17, 2024 | 6.92% (0.06923) | 93.85th | v3 (v2023.03.01) |
| Dec 12, 2024 | 3.94% (0.03942) | 92.35th | v3 (v2023.03.01) |
| Jun 19, 2024 | 3.59% (0.03593) | 91.68th | v3 (v2023.03.01) |
| May 13, 2024 | 3.47% (0.03473) | 91.48th | v3 (v2023.03.01) |
| Feb 25, 2024 | 2.33% (0.02325) | 89.42th | v3 (v2023.03.01) |
| Feb 3, 2024 | 1.68% (0.01680) | 86.40th | v3 (v2023.03.01) |
| Jan 15, 2024 | 1.39% (0.01391) | 84.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.98% (0.00984) | 81.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.34% (0.07344) | 92.59th | v2 (v2022.01.01) |
| Jul 18, 2022 | 7.34% (0.07344) | 92.17th | v2 (v2022.01.01) |
| Jul 17, 2022 | 3.93% (0.03932) | 85.06th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.34% (0.07344) | 91.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.34% (0.07344) | 80.64th | v2 (v2022.01.01) |
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Change history (0)
No recorded changes yet.